The car battery jump starter from the company Rolinger is used to start your car when its battery has been discharged. This often happens when you leave the lights, radio, etc., on while the car is off.

Additionally, it is important to follow the instructions provided in the packaging as well as the correct connection procedures to avoid any issues. Also, remember that battery jump starters need to be charged periodically so they are ready for use when you need them.

Overall, car battery jump starters are useful devices that can help you start your car when the battery is depleted, saving you the hassle and waiting time for help from another driver or roadside assistance.

What does it mean that the Rolinger is a battery jump starter?
A battery jump starter is used to start a vehicle when its battery is depleted or weak. If the car battery, for example, does not have enough power to start the engine, the jump starter provides the necessary energy to start it.

Therefore, it cannot be used as a battery charger as it only has a starting function.